Process for preparing organic electroluminescence material bis (8-hydroxy quinoline lithium sodium)

A technology of lithium sodium hydroxyquinoline and electroluminescent materials, which is applied in the direction of luminescent materials, chemical instruments and methods, and can solve problems such as influence and broadening

A technology of lithium sodium hydroxyquinoline and electroluminescent materials, which is applied in the direction of luminescent materials, chemical instruments and methods, and can solve problems such as influence and broadening

CN1900213AInactive Publication Date: 2007-01-24TAIYUAN UNIV OF TECH +1
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  • Process for preparing organic electroluminescence material bis (8-hydroxy quinoline lithium sodium)
  • Process for preparing organic electroluminescence material bis (8-hydroxy quinoline lithium sodium)
  • Process for preparing organic electroluminescence material bis (8-hydroxy quinoline lithium sodium)

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Embodiment 1

[0107] All preparation equipment and experimental instruments are in quasi-working condition;

[0108] Select chemical raw materials and conduct purity control;

[0109] Preparation of 8-hydroxyquinoline acetone solution:

[0110] 1.59g of 8-hydroxyquinoline crystals and 25ml of acetone were placed in a beaker, stirred with a magnetic stirrer, mixed and dissolved to form an 8-hydroxyquinoline acetone solution with a concentration of 70-80g / L;

[0111] To prepare lithium hydroxide solution:

[0112] Put 0.23g of lithium hydroxide and 5ml of deionized water in a beaker, stir with a magnetic stirrer, mix and dissolve to form a lithium hydroxide aqueous solution with a concentration of 40-50g / L;

[0113] To prepare sodium hydroxide solution:

[0114] Put 0.22g of sodium hydroxide and 5ml of deionized water in a beaker, stir with a magnetic stirrer, mix and dissolve to form a sodium hydroxide aqueous solution with a concentration of 40-50g / L;

[0115] Synthesis of 2(8-hydroxyqu...

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Abstract

The present invention relates to a kind of organic electroluminescent material bis(8-hydroxy quinoline lithium sodium), which is prepared with 8-hydroxy quinoline, lithium hydroxide and sodium hydroxide as materials, acetone and deionized water as solvent, and nitrogen as protecting gas, and through the steps of compounding solution, synthesis reaction, washing and filtering, re-crystallization to purify, vacuum stoving and final vacuum sublimation to purify to obtain blue light emitting high purity bis(8-hydroxy quinoline lithium sodium) powder. Owing to sodium ion for emitting light and electron injection, the bis (8-hydroxy quinoline lithium sodium) material is superior to 8-hydroxy quinoline lithium and has the features of good filming performance, long fluorescence life, high color purity, high light emitting efficiency, etc. The present invention may be used widely in electronic information display and lighting technology.

Description

technical field [0001] The invention relates to a preparation method of an organic electroluminescent material 2 (8-hydroxyquinoline lithium sodium), which belongs to the technical field of organic electroluminescent material research and material synthesis methods. Background technique [0002] Since C.W.Tang of the American Kodak Company first reported the use of 8-hydroxyquinoline aluminum as an organic electroluminescent device in 1987, the research on organic electroluminescent materials has achieved many results, and more and more organic electroluminescent materials have been developed and developed. Among many organic electroluminescent materials, 8-hydroxyquinoline organometallic complexes have the characteristics of good film-forming properties, high luminous efficiency, high luminous brightness, high electron transport rate, high glass transition temperature and simple synthesis process. It is widely used in various organic electroluminescent devices. [0003] 8-...

Claims

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Application Information

Patent Timeline
24 Jan 2007
Publication
CN1900213A
IPC
C09K11/06
Inventors
许并社; 刘旭光